Masteries

Offense:
9

Defense:
21

Utility:
0

Uses spells to help keep the shield up and increases tanking potential using Creeping Death for increased resistance and Children of the Grave for lifesteal.

Runes focus on Magic Penetration and non-decent AP.

Mainly a build for tanking and making the other team hit you instead of your team,
run in with creeping death, use siphon ult the enemy's DPSer, Mace of Spades and repeat whenever available. Creeping Death should bring your melee/magic resists to around a high 70%(possibly 75%,forgot sorry) while you can chain Siphon of Death with Mace of Spades for about 400-600 damage every 5 secs or so.

Just be sure to farm creeps a lot early game so you can easily buy the items as the game progresses.

Item Order :

Regrowth Pendant - So spells are spammable and you can keep his shield up
Boots or another Regrowth Pendant - Depends on situation
Boots or another Regrowth Pendant - Depends on situation
Nature's Fury - As soon as you have the items
Boots --> Merc Treads

Reason for this order is that most games at early game rely heavily on some kind of magic damage.

Then.

Guardian Angel first or Thornmail first - Whichever you would need more depending on the situation.
Guardian Angel or Thornamil - Whichever one you didn't get

And then Leviathan or Banshee's Veil are just items I took to fill up space, they can be swapped with pretty much anything.

Leviathan is for the 15% damage reduction once you have 20 charges.
Banshee's Veil is just to block any CC that could be fatal(Malph's ult, Ashe's Arrow, etc.).